Last I knew you had to buy an adapt-a-kit. I could not get one when I did my Carrier to Coleman so I ended up doing something different.
I do however remember the instructions.. Remove the old A/C and gasket from roof. Set new gasket on roof and set A/C on top of it.
NOTE in doing this you must remove the ceiling cover and 4 bolts. while there Tag and unhook all wires.
Remove all the electronics from the metal plate Remove metal plate
Transfer electronics to NEW metal plate, mount and attach
Plug in adapt-a-cable and plug in A/C replace 4 NEW bolts (different size) but DO NOT TIGHTEN.
Measure and carefully cut styrofoam panel.
Install panel and tighten bolts till indicator is where they tell you it should be.
Test. if it works replace ceiling cover and filters. DO not forget to clean filters.
The other A/C I used an Advent Air (Do not recommend) I did not have to replace the metal plate. Just the roof unit, but I did have to replace one of teh sockets on the Carrier control box.. The poor RV techican did nto know how to do that.. My Certification is in electrnoics. So it was covered in my training.
